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W System Batch VAT Validation (VIES)
x402
W System Batch VAT Validation (VIES) is a paid API for AI agents from api.wsystem.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-30).
Validates multiple EU VAT numbers in a single batch call against the official VIES system, returning validity, name, and address for each.
Price / call$0.1
Success—
StatusUnknown
How this service works
Batch EU VAT validation via VIES (up to 100 per request)
Output
Returns an array of results for each submitted VAT number, including validity status (valid/invalid), company name, registered address, and country code as reported by the official EU VIES system.
Example use cases
Pre-invoice supplier VAT check
“I have a batch of 10 EU supplier VAT numbers I need to verify before running payroll this month — can you check all of them against VIES and tell me which are valid and what company names come back? Here they are: DE123456789, FR98765432100, NL123456789B01, IT12345678901, ES12345678A.”
New customer onboarding KYB
“We just received registration details from 5 new EU business customers. Can you batch-validate their VAT numbers — GB123456789, BE0123456789, PL1234567890, SE123456789001, DK12345678 — so I know which companies are legitimately registered before we activate their accounts?”
Accounting reconciliation audit
“Our accounting system flagged a bunch of EU VAT numbers on recent invoices as potentially invalid. Can you run a batch check on these for me: AT12345678, BG123456789, CZ12345678, HR12345678901 — I need the validity status and company name from VIES for each one.”
Technical details
Endpoint
POSThttps://api.wsystem.dev/verify/batch?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to validate multiple EU VAT numbers in a single API call rather than making individual requests per number, saving time and reducing cost. Prefer this over the single-VAT endpoint when processing lists of suppliers, customers, or invoice counterparties in bulk. Ideal for KYB workflows, accounting reconciliation, and onboarding pipelines where multiple businesses must be verified simultaneously.
Side effects
- VIES service temporarily unavailable for a specific EU member state (returns country-specific error)
- Invalid VAT number format causes validation error for that entry
- Rate limiting or payment failure blocks the batch request
- Empty or malformed vats array returns a validation error
- VIES returns no company name/address when the company has opted out of disclosure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| vats | array |
Tags
x402
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